/*
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite.symbolic.expr.fp;

import org.evosuite.symbolic.expr.AbstractExpression;
import org.evosuite.symbolic.expr.ExpressionVisitor;
import org.evosuite.symbolic.expr.Variable;

import java.util.HashSet;
import java.util.Set;

public final class RealVariable extends AbstractExpression<Double> implements RealValue,
        Variable<Double> {
    private static final long serialVersionUID = 1L;

    private final String name;
    private final double minValue;
    private final double maxValue;

    /**
     * <p>
     * Constructor for RealVariable.
     * </p>
     *
     * @param name     a {@link java.lang.String} object.
     * @param conV     a double.
     * @param minValue a double.
     * @param maxValue a double.
     */
    public RealVariable(String name, double conV, double minValue, double maxValue) {
        super(conV, 1, true);
        this.name = name;
        this.minValue = minValue;
        this.maxValue = maxValue;
    }

    /**
     * <p>
     * Setter for the field <code>concreteValue</code>.
     * </p>
     *
     * @param conV a double.
     */
    public final void setConcreteValue(double conV) {
        this.concreteValue = conV;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String getName() {
        return name;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Double getMinValue() {
        return minValue;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Double getMaxValue() {
        return maxValue;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String toString() {
        return this.name + "(" + concreteValue + ")";
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean equals(Object obj) {
        if (obj instanceof RealVariable) {
            RealVariable v = (RealVariable) obj;
            return this.getName().equals(v.getName());
        }
        return false;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int hashCode() {
        return this.name.hashCode();
    }

    @Override
    public Set<Variable<?>> getVariables() {
        Set<Variable<?>> variables = new HashSet<>();
        variables.add(this);
        return variables;
    }

    /* (non-Javadoc)
     * @see org.evosuite.symbolic.expr.AbstractExpression#getConstants()
     */
    @Override
    public Set<Object> getConstants() {
        // Do not include original values?
        return new HashSet<>();
    }

    @Override
    public <K, V> K accept(ExpressionVisitor<K, V> v, V arg) {
        return v.visit(this, arg);
    }
}
